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[가솔린엔진부문] 평면 이미지 기법을 이용한 분무 입경 분포 측정
윤일한(Ilhan Yoonm),이형승(Hyung-Seung Yi),민경덕(Kyoungdoug Min) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
A planar image technique is applied to measure the distribution of droplet size which is related to the characteristics of emissions and combustion of GDI engine. The technique is based on the principles of fluorescence and Mie scattering of droplet in the spray. When laser light sheet illuminates particles in a cross section of spray, the particles emit fluorescence and Mie scattering light. The fluorescence and scattering signals are imaged simultaneously by an optical system composed of a doubling prism. optical filters, and an ICCD camera. Relative SMD distributions according to space and time are obtained through calculating the ratio between two light intensities and the distributions are quantified with LDPA. The experimental results show that the characteristics of GDI injector are varied with injection pressure